JPH0614367U - In-vehicle pallet fall prevention device for multilevel parking system - Google Patents

Abstract

(57) [Abstract] [Purpose] In-vehicle multi-level parking device that operates reliably regardless of where the chain breaks and prevents the in-vehicle pallet from dropping, and does not hinder the lifting of the pallet except when disconnected. Provide a pallet drop prevention device. [Structure] Suspension supports 2 are provided at four corners of pallet 1. A chain 4 hanging along a vertical column 3 is locked to the suspension support 2 to suspend the pallet. The chain is hoisted or unwound to raise and lower the pallet. A large number of engaging holes 5 are provided in the column in the vertical direction, and a latch 10 for engaging with the engaging holes to prevent the pallet from descending is pivotally attached to the suspension support portion. The latch has a wire 15 that moves up and down in parallel with the chain.
Lock. Normally, the latch is placed in the non-operating position, and when the chain is cut, the tension of the wire forcibly swings the latch to engage the engaging hole. A recess 17 is formed in the latch, and when the latch is in the non-operating position, the ball plunger 18 is engaged with the recess to moor the latch, and the tension of a certain value or more applied to the wire when the chain is cut causes the ball plunger to move. Disengage.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a fall prevention device for an on-vehicle pallet in a multi-level parking device, and more specifically, it suspends a suspension pendant provided at a plurality of positions of a pallet on which a vehicle is mounted on a chain that hangs along a vertical column and winds the chain. The present invention relates to an in-vehicle pallet fall prevention device in a multilevel parking device that raises and lowers pallets.

[0002]

[Prior art]

 In a multi-story parking system that suspends suspension supports provided at the four corners of a pallet on which a vehicle is placed on a chain that hangs along vertical columns, and hoists the chain to raise and lower the pallet, the chain may break and the pallet may drop. There is a risk of tipping and also of the risk of vehicles loaded on pallets falling or striking columns. To prevent such a danger, a fall prevention device is provided. As such a fall prevention device, when the chain is cut, the latch provided on the suspension support is turned and engaged with any one of a plurality of engagement holes provided in the vertical direction on the support column so that the pallet is engaged. It is known to prevent the fall of. Although various means have been proposed as the means for pivoting the latch, all of them have problems in that they do not operate reliably, or the fall prevention device may not operate depending on where the chain is cut.

[0003]

[Problems to be solved by the device]

 Therefore, an object of the present invention is to provide an in-vehicle pallet fall prevention device for a multi-level parking device with a simple structure that can reliably operate where the chain breaks and prevent the in-vehicle pallet from falling. There is.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the in-vehicle pallet fall prevention device for a multi-level parking device according to the present invention is provided with suspension supports at a plurality of locations on a pallet on which a vehicle is placed, and a chain hanging along a vertical column is attached to the suspension supports. In a multi-level parking device that stops and hangs the pallet, hoists the chain, and raises and lowers the pallet, the post has a large number of engaging holes in the vertical direction, and the suspension support part engages with the engaging holes to secure the pallet. It has a latch to prevent it from descending, to which the wire that goes up and down with it parallel to the chain is locked, which is normally placed in the inactive position, so that the tension of the wire when cutting the chain The latch is pivoted to engage with the engaging hole, and the latch is normally anchored in the non-operating position so that the latch engages when a predetermined load is applied to the wire. It characterized by attaching a mechanism for causing the release to pivot work.

[0005]

[Action]

 In the in-vehicle pallet fall prevention device of the present invention, the chain always suspends the pallet, the wire is in an unloaded state, and goes up and down together with the chain. Therefore, the chain and the wire maintain a predetermined relative vertical positional relationship. Then, in this state, the latch is in the inoperative position. However, when the chain breaks, the pallet loses its support, the load is applied to the wire, the wire is relatively pulled up, the wire is loaded more than a predetermined value, the latch is released from the mooring, and the latch turns. . When the latch pivots at a predetermined angle, it engages with one of the engaging holes of the column to prevent the pellet from falling. When the chain is not cut, even if a load is unnecessarily applied to the wire and a force to rotate the latch acts, the latch is not rotated unless the load is a predetermined value. It does not interfere with the pallet raising and lowering operation when the machine is not cut.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a fall prevention device, FIG. 2 is a sectional view taken along line II-II in FIG. 1, FIG. 3 is a perspective view of a multilevel parking device, and FIG. 4 is a diagram showing an example of a chain tensioning method for raising and lowering a pallet. Is.

In FIG. 3, suspension supports 2 are provided at four corners of a pallet 1 on which a vehicle is placed. The front two of the suspension supports are designated as 2a and the rear two are designated as 2b. The four columns 3 are vertically installed at the outer positions of the suspension support 2. Of these four columns, the front two are designated as 3a and the rear two are designated as 3b. A chain 4 is stretched along the column 3, and an end of the chain 4 is locked to the suspension support 2. An example of a method of stretching the chain 4 will be described with reference to FIG.

As shown in FIG. 4, a chain 4a is stretched so as to connect the suspension support portions 2a and 2b adjacent to each other across the front and rear struts 3a and 3b on one side. That is, the chain 4a extends upward from the front suspension support 2a along the support column 3a, passes through the sprocket S1 provided at the upper end, passes through the sprocket S2 provided at the upper end of the rear support column 3b, and reaches the rear support column 3b. It extends downward along the sprocket S3 provided at the lower end of the rear column 3b, and extends upward to be fixed to the rear suspension support 2b. Another chain 4b extends upward from the suspension support 2b on the rear support 3b so that the motor M provided on the support 3b can be used for hoisting and unwinding. A chain is also stretched over the two front and rear columns 3a and 3b on the opposite side. The motors M for winding and unwinding the chain 4b may be provided one on each side, but it is preferable that one motor M is shared on both sides.

When the chain Mb is hoisted by the hoisting operation of the motor M, the rear suspension part 2b, and thus the rear part of the pallet 1, ascends. As a result, the chain 4a is pulled, so that the front suspension support portion 2a, and thus the front of the pallet 1, also rises. When the chain 4b is paid out by the reverse rotation of the motor M, the rear side of the pallet 1 is lowered and the chain 4a is loosened by this, so that the front side of the pallet 1 is also lowered. Thus, the pallet 1 is raised and lowered.

In order to keep the both sides of the pallet 1 parallel, a chain extending from one upper end of the two rear columns 3b through the pallet 1 to the other lower end via a sprocket is stretched. It is preferable.

In FIGS. 3 and 4, when the chain 4a is cut halfway, the front suspension support portion 2a loses its support, so that the pallet 1 tilts forward and the vehicle on the pallet 1 falls or collides with the column. There is a risk of According to the invention, a device for preventing this is provided on the suspension support 2a.

Even when the chain 4b is cut, the pallet 1 drops, and therefore, in order to prevent this, it is desirable to attach a similar fall prevention device to the rear suspension support portion 2b as well.

Hereinafter, the fall prevention device will be described in detail with reference to the drawings. Here, no distinction is made between the front and rear of the suspension support, the column, and the chain, and therefore they are simply indicated by reference numerals 2, 3, and 4.

As shown in FIG. 1, the pillar 3 is provided with a large number of engagement holes 5 arranged in the vertical direction. As shown in FIGS. 1 and 2, the suspension support portion 2 includes brackets 7 fixed to both ends of the horizontal beam 6 of the pallet. The lower end of the chain 4 is locked to the upper part of the support plate 8 of the bracket 7 via a connecting fitting 9. A latch 10 is pivotally attached to the middle portion of the support plate 8 by a shaft 11. A roller 12 is rotatably supported by a shaft 13 below the support plate 8.

As best seen from FIG. 2, a recess 17 is formed at a predetermined position of the latch 10 in the plate thickness direction. A ball plunger 18 is provided on the support plate 8 so as to face the recess 17.

The ball plunger 18 is attached to the support plate 8 so as to engage with the recess 17 when the latch 10 is in the non-operating position shown by the solid line in FIG.

The ball plunger 18 described above is of a type in which a ball provided at the tip is pushed out by a spring provided inside, and a known one may be used.

The latch 10 has a projecting piece 14 at an intermediate portion, and a lower end of a wire 15 is locked to the projecting piece 14. The wire 15 is stretched in parallel with the chain 4 and is wound or unwound by the motor M together with the chain 4. Then, in the state where the chain 4 supports the suspension support portion 2, the latch 10 is in the non-operating position shown by the solid line in FIG. 1, and the tip end thereof is in contact with the shaft 13 of the roller 12. In this state, no load is applied to the wire 15. The latch 10 can prevent the pallet from descending by engaging the tip of the latch 10 with the engaging hole 5 of the support column 3 in a state shown by an imaginary line (two-dot chain line) which is rotated clockwise in FIG. it can.

In the vehicle-mounted pallet fall prevention device of this embodiment, however, the chain 4 always supports the suspension support portion 2, and the wire 15 is in a non-loaded state. Since the wire 15 moves up and down together with the chain 4, it maintains the relative vertical position relationship with the chain 4. In this state, the latch 10 is in the non-operating position (standby position) shown by the solid line in FIG. Therefore, the lifting operation of the pallet 1 is not hindered.

However, when the chain 4 breaks, the pallet 1 loses its support, its load is applied to the wire 15, the wire 15 is relatively pulled up, and the latch 10 is disengaged from the ball plunger. , Turn clockwise in FIG. When the latch 10 turns a predetermined angle, it engages with any one of the engaging holes 5 closest to the support column 3 to prevent the falling of the pellet 1.

The pressure holding force of the ball plunger 18 against the latch 10 must be released so as to rotate the latch 10 when the load of the pallet 1 is applied to the wire 15 by cutting the chain 4. On the other hand, except when the chain 4 is cut, the pivoting operation of the latch 10 is prevented depending on the load applied to the wire 15 for some reason, that is, the latch 10 is moored and held in the non-operating position except when the chain 4 is cut. Therefore, the pallet raising and lowering operation must not be hindered.

The adjustment of the operating torque of the latch 10 as described above can be performed by changing the strength of the spring for urging the ball of the ball plunger 18 and the diameter and depth of the recess 17 formed in the latch 10. You can also do

[0023]

[Effect of device]

 As described above, according to the present invention, the suspension pallets are provided at a plurality of positions on the pallet on which the vehicle is mounted, and the chain that hangs along the vertical column is locked to the suspension fulcrum to suspend the pallet, and the chain is rolled up to lift the pallet. In a three-dimensional parking device that raises and lowers, a plurality of engaging holes are provided in the vertical direction on the pillar, and a latch for engaging the engaging holes to prevent the pallet from descending is pivotally attached to the suspension support part. A wire that goes up and down along with the chain is locked to this latch, and the latch is normally moored in a non-operating position by a mooring mechanism. The pallet drop prevention device is configured so that the latch is released from the mooring and the latch is forcibly swung to engage with the engaging hole, so that the chain operates reliably no matter where the chain breaks. It is possible to prevent the fall of the pallet. Moreover, even if the wire is unduly loaded due to some cause other than chain disconnection, the mooring mechanism does not cause the latch to operate accidentally.Therefore, when the chain is not disconnected, that is, when the pallet is smooth Therefore, it is possible to secure a proper lifting operation.

Moreover, according to the present invention, a simple ball plunger can be used as a mooring mechanism to keep the latch moored at a constant position even when the chain is not cut. It is possible to provide a fall prevention device.

[Brief description of drawings]

FIG. 1 is a front view of a fall prevention device.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view of a multi-level parking device.

FIG. 4 is a diagram showing an example of a method of stretching a chain that suspends a vehicle-mounted pallet in the multi-storey parking lot shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pallet 2 Suspension support 3 Strut 4 Chain 5 Engagement hole 10 Latch 15 Wire 17 Recess formed in latch 18 Ball plunger

Claims (2)

[Scope of utility model registration request] 1. A three-dimensional parking apparatus for suspending a suspension support portion provided at a plurality of positions of a pallet on which a vehicle is mounted on a chain that hangs along a vertical pillar, and hoisting the chain to raise and lower the pallet. A plurality of engaging holes are provided in the up-down direction, and a latch for engaging the engaging holes to prevent the pallet from descending is pivotally attached to the suspension support portion, and the latch is provided in parallel with the chain. The wire that moves up and down together with the chain is locked, the latch is normally placed in a non-operating position, and when the chain is cut, the latch is pivoted by the tension of the wire to engage with the engaging hole, Further, the latch is provided with a mechanism for keeping the latch moored at a non-operating position at all times and releasing the mooring when the tension of the wire exceeds a predetermined value. Automotive pallet fall prevention device. 2. The mooring and releasing mechanism of the latch includes a recess formed in the latch, a spring attached to the suspension support, and a steel ball biased by the spring to engage with the recess. The in-vehicle pallet fall prevention device for a multi-storey parking lot according to claim 1, wherein